Star Projector - Canis Major

thingiverse

A center-piece projector that projects the constellation Canis Major onto a table. I made this for the annual dinner of the Auckland Astronomical Society. They'll have one of these on each table, since I couldn't find any good astronomy-themed centerpieces. Follow the steps on the instructions page; it's actually quite simple to make. The print files are ready. They're correctly scaled and self-supported, so no supports or rafts are needed. You can use the battery holder for anything you like; it's not customized exclusively to this projector, except for a slight indent showing where the LED goes. You can also get the battery holder separately. I'd like to give a huge thank you to threonin for the idea and NotSoSolid for the battery holder base Instructions This is very simple; I could even do it with my lack of electronics expertise. The print files should be good to go. They should be correctly scaled and self-supported, so no supports or rafts are required. You'll need: Three printed 3D models A CR2032 battery A Super Flux 4-pin LED Instructions: Thread some thin wire through the holes in the battery holder. The wires on the + (positive) side should go through the center holes to touch the battery, then loop up and through the back holes to the other side. Glue down the LED onto the impression for the LED on the - (negative) side of the battery holder, then glue down the positive side (the side without the impression) of the battery holder into the lid. You'll need to solder the contacts of the wire onto the LED. While I tried to give a solution that doesn't require soldering, it just wasn't happening, I'm afraid.